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Cerro Pachon C n 2 profile r 0 = 16 cm Science wavelength = 1 m m

MOAO Ensquared Energy vs Laser Guidestar Constellation Geometry Don Gavel July 13, 2005. Cerro Pachon C n 2 profile r 0 = 16 cm Science wavelength = 1 m m 90km laser guide star cone beams Includes Tomographic and DM fitting error for 100 subaps across. 8. 8. 8. 7. 6. 7. 8.

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Cerro Pachon C n 2 profile r 0 = 16 cm Science wavelength = 1 m m

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  1. MOAO Ensquared Energy vs Laser Guidestar Constellation Geometry Don GavelJuly 13, 2005 • Cerro Pachon Cn2 profile • r0= 16 cm • Science wavelength = 1mm • 90km laser guide star cone beams • Includes Tomographic and DM fitting error for 100 subaps across

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  9. PSF ensquared energy: with and without tip/tilt blur Blurred by 15mas tip/tilt 8

  10. Can we use only one low-stroke MEMS DM and wrap the phase? AO correction phase-wrapped at 2 x center-wavelength of J band • J band: 1.238 +/- 0.136 mm

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